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Finding the Fourth Proportional to 352,561.28, 527,661.12 and 289,379.20

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Solution

The fourth proportional to 352,561.28, 527,661.12 and 289,379.20 is: 433,099.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,561.28 : 527,661.12 = 289,379.20 : x
  2. Step 2: Convert to fraction form
    352,561.28/527,661.12 = 289,379.20/x
  3. Step 3: Cross multiply
    352,561.28x = 527,661.12 × 289,379.20
  4. Step 4: Simplify right side
    352,561.28x = 152,694,152,776.70
  5. Step 5: Solve for x
    x = 152,694,152,776.70/352,561.28
  6. Step 6: Final answer
    x = 433,099.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.